a.entrar {
    background-image: url('/static/img/icons/login.png');
    background-repeat: no-repeat;
    background-size: 20px;
    background-position: 4px 4px;
    padding:5px 5px 5px 24px;
}

a.sair {
    background-image: url('/static/img/icons/sair.png');
    background-repeat: no-repeat;
    background-size: 20px;
    background-position: 28px 4px;
    padding:5px 24px 5px 5px;
}

a.voltar {
    color: #024;
    background-image: url('/static/img/icons/back-01.png');
    background-repeat: no-repeat;
    background-size: 20px;
    background-position: 3px 3px;
    padding:5px 5px 5px 30px;
    
    border: 2px solid #024;
    
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    border-radius: 5px;
}

a.documentacao {
    background-color: #036;
    color: white;
    padding: 2px;
}

a.documentacao:HOVER {
    background-color: #06a;
    color: white;
    padding: 2px;
}